JPH10325691A - Heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a boundary of passages by blocking either one passage without using a complex shaped blocking plate. SOLUTION: By laminating a primary sheet 1 comprising a corrugated plate, a high temperature side passage 2 and a low temperature side passage 3 are alternately formed. A header is provided with each manifold for circulating each high temperature fluid 8 and low temperature fluid through the high temperature side passage 2 and the low temperature side passage 3, respectively. An opening edge part of each primary sheet 1 which is located about the periphery of each manifold is crushed to form a flat processed part 1a. By welding a ring joint 18 between the alternate flat processed parts 1a, the high temperature side passage 2 and the low temperature side passage 3 are partitioned from each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger used for recovering and effectively utilizing the energy of a high-temperature fluid in the fields of petroleum, chemistry and energy.

[0002]

2. Description of the Related Art As this type of heat exchanger, a one-sided type heat exchanger has been conventionally known. This is one in which one fluid is completely sealed and the other is open, or each fluid is an inlet-side header type and an outlet-side open type. However, if these fluids are flammable, toxic, or radioactive hazardous fluids, an outer shell is required, and it is necessary to prevent mixing of fluids in the shell, which hinders compactness. doing.

[0003] Therefore, a completely sealed type is advantageous in that a hazardous substance fluid can be handled and compacted. As shown in FIGS. 2 to 6, the completely-sealed heat exchanger is configured by stacking primary sheets 1 made of corrugated plates and forming a space formed between the primary sheets 1 of each layer.
The heat transfer section 4 is formed in the intermediate region as the high-temperature side flow path 2 and the low-temperature side flow path 3 alternately, and the distribution sections 5 are formed in the headers 6 and 7 at both ends. The high-temperature fluid 8 introduced from the fluid inflow manifold 10 is discharged from the high-temperature fluid outflow manifold 11 of the other header 7 through the high-temperature side flow path 2, and the low-temperature fluid outflow manifold 11 of the other header 7. The low-temperature fluid 9 introduced from the low-pressure side channel 3 is discharged from the low-temperature fluid outlet manifold 13 of the other header 6 through the low-temperature side channel 3, and the high-temperature fluid 8 and the low-temperature side channel 3 The low-temperature fluid 9 flowing through the inside is indirectly contacted via the primary sheet 1 to exchange heat.

In order to prevent deformation due to pressure, the primary sheet 1 has side plates 14 arranged on the uppermost layer and the lowermost layer as shown in FIG. 5 to form a manifold forming each manifold. Welded to pipe 15 and
In order to form a boundary with the atmosphere, as shown in FIG. 6, the outer peripheral portion is lip-welded to the peripheral wall plate 16, and in order to form a flow path boundary, as shown in FIG. The opening is closed by a closing plate 17 every other layer.

[0005]

However, in the case of the above heat exchanger, a blocking plate 17 having a complicated shape corresponding to the corrugated shape of the primary sheet 1 is required in order to form a flow path boundary. Processing and welding work of the plate 17 were difficult. That is, since the shape of the opening for the manifold of the primary sheet 1 becomes indeterminate in the peripheral portion of the manifold, there is a problem that the work of closing the primary sheet 1 is extremely troublesome.

Accordingly, the present invention is intended to form a flow path boundary by closing one flow path without using a closing plate for processing into a complicated shape.

[0007]

According to the present invention, in order to solve the above-mentioned problems, a primary sheet made of a corrugated plate is laminated and a high-temperature side flow path and a low-temperature side flow path are alternately formed between respective layers. The high-temperature fluid flows from the high-temperature fluid inflow manifold of the header through the high-temperature side flow path toward the high-temperature fluid outflow manifold of the other header, and the low-temperature fluid flows from the low-temperature fluid inflow manifold of the other header. In the heat exchanger in which the low-temperature fluid is caused to flow toward the low-temperature fluid outflow manifold of one of the headers through the flow path, the opening edge of each primary sheet located around each of the manifolds is crushed and flattened. A processing portion is formed, and a ring joint is attached to a space portion of one layer of the flat processing portion to form a flow path boundary.

Since the opening edge around the manifold of the primary sheet is flattened, there is no need to form a ring joint for closing one of the flow passages into a complicated shape, and welding can be easily performed. become able to.

Further, by forming the ring joint into a U-shaped cross section, it is advantageous in terms of strength.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention.
In the heat exchangers shown in FIGS. 2 to 6, as shown with respect to the high-temperature fluid inflow manifold 10, the manifold 10 is formed in order to form a flow path boundary between the high-temperature flow path 2 and the low-temperature flow path 3. In place of the configuration shown in FIG. 5 in which the opening for the manifold of the primary sheet 1 placed on the peripheral layer is closed by the closing plate 17, the opening edge of each primary sheet 1 located on the peripheral part of the manifold 10 is moved up and down. The flattened portions 1a are respectively crushed in the direction, and the diameter of the manifold tube 15 is larger than that of the manifold tube 15 in the space (the low-temperature side flow path 3 in the present embodiment) between the flattened portions 1a arranged vertically. The formed U-shaped ring joint 18 is fitted and arranged, and attached by welding.
And a low-temperature side flow path 3.

Although not shown, the manifolds 11, 12, and 13 (see FIGS. 2 to 4) other than the above-described manifold 10 also flatten the opening edge of the primary sheet 1 by crushing the opening edge. The ring joints 18 are respectively formed in the manifold 11 so as to close the low temperature side flow path 3 as in the case of the manifold 10, and in the manifolds 12 and 13 so as to close the high temperature side flow path 2. It is configured to be attached to form a flow path boundary between the high temperature side flow path 2 and the low temperature side flow path 3.

As described above, each of the manifolds 10, 11,.
Each primary seat 1 located at the periphery of 12, 13
When the flat processing portion 1a is formed at the opening edge of the opening, and the ring joint 18 is attached to every other layer, the high-temperature side flow path 2 and the low-temperature side flow path 3 can be reliably separated. Since it is not necessary to form a complicated shape corresponding to the opening of the primary sheet 1, it is easy to process and weld, and in particular, because it has a U-shaped cross section, it is advantageous in terms of weight and strength.

In the above, the high temperature fluid 8 and the low temperature fluid 9
Is reliably isolated inside and on the surface of the heat exchanger, so it does not mix even with hazardous material fluids and has excellent reliability. Is not required, so that compactness is not impaired.

[0015]

As described above, according to the heat exchanger of the present invention, a primary sheet made of a corrugated plate is laminated, and a high-temperature channel and a low-temperature channel are alternately formed between the layers.
The high-temperature fluid flows from the high-temperature fluid inflow manifold of one header to the high-temperature fluid outflow manifold of the other header through the high-temperature side flow path, and the low-temperature fluid flows from the low-temperature fluid inflow manifold of the other header. In the heat exchanger that is configured to flow the low-temperature fluid toward the low-temperature fluid outflow manifold of one of the headers through the side flow path, by crushing the opening edge of each primary sheet located around each of the manifolds As a flattened portion, and a ring joint is attached to the space portion of the other one of the flattened portions to form a flow path boundary, so that the flow path boundary around the manifold has a complicated shape. Can be formed without using a blocking plate,
The reliability can be improved without compromising compactness, the form can be diversified, and the ring joint has a U-shaped cross-section, so that it is lightweight and advantageous in strength. And other excellent effects.

[Brief description of the drawings]

FIG. 1 is an enlarged view of a manifold part showing an embodiment of a heat exchanger of the present invention.

FIG. 2 is an overall schematic diagram showing an example of a heat exchanger.

FIG. 3 is a plan view of a low-temperature side flow path corresponding to a view taken in the direction of arrows III-III in FIG.

FIG. 4 is a plan view of a high-temperature side flow path corresponding to the direction of arrows IV-IV in FIG. 2;

FIG. 5 is an enlarged view in the direction of arrows VV in FIG. 2;

6 is an enlarged view taken in the direction of arrows VI-VI in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Primary sheet 1a Flat processing part 2 High temperature side flow path 3 Low temperature side flow path 6 Header 7 Header 8 High temperature fluid 9 Low temperature fluid 10 High temperature fluid inflow manifold 11 High temperature fluid outflow manifold 12 Low temperature fluid inflow manifold 13 Low temperature fluid outflow Manifold 18 Ring joint

Claims (2)

[Claims] 1. A high-temperature side flow path and a low-temperature side flow path are alternately formed between layers by laminating a primary sheet made of a corrugated plate, and the high-temperature side flow path is passed from a high-temperature fluid inflow manifold of one header. The high-temperature fluid is caused to flow toward the high-temperature fluid outflow manifold of the other header, and from the low-temperature fluid inflow manifold of the other header to the low-temperature fluid outflow manifold of one header through the low-temperature side flow path. In the heat exchanger in which the low-temperature fluid is caused to flow, the opening edge of each primary sheet located at the periphery of each of the manifolds is crushed into a flattened portion, and the flattened portion is placed in another space portion. A heat exchanger having a configuration in which a ring joint is attached to form a flow path boundary. 2. The heat exchanger according to claim 1, wherein the ring joint has a U-shaped cross section.